202 piece Quadrilla Rail Set is more substantial with 67 pieces and is a good choice for a child already doing lots of building. This set includes 13 wood tracks in three sizes, 40 blocks in nine colors, 35 rings in 2 colors and 5 shapes, 5 track plugs, two types of accelerators, a switching bucket and a teeter totter

The Quadrilla rail set lets you build an infinite number of designs -- youll rarely see the same run twice. High quality natural wood, brilliant colors. . . Its all here, in one timeless, top-notch innovative plaything. Weve never seen anything like it.

Your children will love their independence in constructing a fast-moving marble run. Truly ingenious in design. The meticulously crafted wooden runs notch together with ease making Quadrilla a favorite for even the youngest children. Tracks sit level and speed results from the use of different connecting blocks, accelerators & action pieces. All simply combined for fast moving effects.

This Quadrilla Rail Set contains everything you need to begin this elite building experience. Also included are detailed, easy to follow instructions for 4 rail combinations-(including competition tracks for marble races!) The Classic Marble Run (with 2 parallel runs for competition); The Triangular Marble Run with Seesaw (allows for different directions of marble movement); The Square Marble Run with Two Seesaws (A complex marble run set up in a square with many different pathways & 2 seesaws for top racing excitement); Also illustrated: The Marble Run Without Rails, The Triangle Marble Run & The Marble Run for Competition.

Connecting Blocks (2 5/8 x 1 5/8 inches)

• 6 Orange Angled Chute & Drop Through Tunnel
• 2 Natural Vertical Chute & Drop Through Tunnel
• 9 Yellow Angled Chute
• 5 Red Alternating Angled Chute
• 6 Teal Angled Chute & Double Tunnel
• 6 Green Angled Chute & Drop Through Tunnel
• 4 Blue Angled Chute & Single Drop Tunnel

Accelerators

• 5 small red accelerators (1 x 1/2 inch)
• 2 large red accelerators (1 1/2 x 1 5/8 inches)

Big Action Pieces

• 1 extra large green ramp seesaw (9 1/2 x 2 3/4 inches)
• 1 red tip balance seasaw (7 1/2 x 3 inches)

Rails

• 3 rails with 5 hole drops (1 3/4 x 19 3/4 inch)
• 8 rails with 4 hole drops (1 3/4 x 19 3/4 inch)
• 2 rails with 4 hole drops (1 3/4 x 10 3/4 inch)
• 4 rails with 2 hole drops (1 3/4 x 3 1/2 inch)
• 4 square rails 4 with hole drops (3 1/2 x 3 1/2 inch)
• 2 rails with 3 hole drops (1 3/4 x 5 1/4 inch)

Hole Covers

• 5 natural (1 1/4 inch diameter)

Spacing Elements to Adjust Track Height

• 15 purple with connectors (1 3/4 x 1 3/4 inch)
• 10 natural (1 3/4 x 1 3/4 inch)

Quadrilla Rail Set

• 102 Great Pieces To Construct A High Quality Wooden Track
• Brilliantly Colored Wood
• Highly Stable Design
• Wooden Pieces Fit Together for Amazingly Easy Construction
  (Pieces set on top of one another & stay put)
• Fast Moving Effects
• Loaded with Possibilities for Design Innovation
• Rails, Connecting Blocks, Accelerators & Action Pieces
• 100 Colorful Marbles
• Instructions for 4 Fantastic Rail Combinations
• Includes Instructions for Parallel Track Runs for Competition
• Owner`s Manual

Quadrilla is the next generation of marble runs. It is a system of blocks, tracks and accessory pieces that allow the energy of a marble to travel in a make-your-own path. Beautiful wood tracks and a rainbow of colored blocks, each with a different function, are the starting point for endless contraptions for marbles to drop to a new level, go right or left, swirl in a funnel, or pour out of a teeter totter.

Quadrilla’s versatile design allows the child to determine the marble’s path and the options are endless. Simple 2 or 3 level switches or complex multi-level, multi-direction layouts are possible depending on the builder’s understanding of the function of each piece. Quadrilla has developed a logical, sturdy product where the process of building is as much fun as the process of playing.